>>> Unpacking source...
>>> Unpacking dx-4.4.4.tar.gz to /var/tmp/portage/sci-visualization/opendx-4.4.4/work
 * Applying opendx-4.3.2-sys.h.patch ...
  [ ok ]
 * Applying opendx-compressed-man.patch ...
  [ ok ]
 * Running eautoreconf in '/var/tmp/portage/sci-visualization/opendx-4.4.4/work/dx-4.4.4' ...
 * Running aclocal ...
  [ ok ]
 * Running libtoolize --copy --force --automake ...
  [ ok ]
 * Running aclocal ...
  [ ok ]
 * Running autoconf ...
  [ ok ]
 * Running autoheader ...
  [ ok ]
 * Running automake --add-missing --copy ...
  [ ok ]
 * Running elibtoolize in: dx-4.4.4
 *   Applying install-sh-1.5.patch ...
 *   Applying portage-1.5.10.patch ...
 *   Applying sed-1.5.6.patch ...
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/sci-visualization/opendx-4.4.4/work/dx-4.4.4 ...
 * Could not find a usable .config in the kernel source directory.
 * Please ensure that /usr/src/linux points to a configured set of Linux sources.
 * If you are using KBUILD_OUTPUT, please set the environment var so that
 * it points to the necessary object directory so that it might find .config.
 * 
 * ERROR: sci-visualization/opendx-4.4.4 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 3556:  Called smp_check
 *             environment, line 3547:  Called linux_chkconfig_present 'src_compile'
 *             environment, line 2820:  Called require_configured_kernel
 *             environment, line 3484:  Called die
 * The specific snippet of code:
 *           die "Kernel not configured; no .config found in ${KV_OUT_DIR}";
 *  The die message:
 *   Kernel not configured; no .config found in 
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/log/portage/sci-visualization:opendx-4.4.4:20080404-204150.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sci-visualization/opendx-4.4.4/temp/environment'.
 *